Attachment for road graders



' Feb. 2, 1932. r 1 5. ARNOLD ET AL 1,843,260

- ATT AD GRADERS Filed Sept. 25, 1930 2 Sheets-Sheet 1 I lNVE/VTOQSLOUIS G. ARNOLD VIVIAN ISAACSON 1932- Y L. 3v ARNOLD ET AL 1,343,259

ATTACHMENT FOR ROAD GRADERS Filed Sept. 25, .1930 2 Sheets-Sheet 2 28 25//V 75 N T0125 Lou/s 5.4214040 w WAN [5AA cso/v B JIM/MM ATTOIe VE YS'Patented Feb. 2, 1932 PAT-T oFFicE LOUIS G. ARNOLD AND ISAAGSON, OF'EAUICLAIRE, WISCONSIN ATTACHMENT FOR non]: l GRADERS Application filedSeptember 25, 1930. Serial No. 484,310.

This invention relates to an improved attachment for a road workingmachine such as a grader including a main scraper blade,

whereby the grader, may be used for finishing 5 the shoulders usuallyprovided at each side of a highway.

An object of the invention is to provide in combination with a roadgrader, an auxilia-ry blade having means for adjustably se- 1 0 curingit to one end of the scraper blade, whereby it may be adjusted todifferent positions to suit the slope of the shoulder to be formed.

A further object is to provide a shoulder sloper attachment for anordinary road grader, whereby the latter may be used for finishing theshoulders usually provided at each side of a paved highway, and having aguide means for assisting the operator sta- 0 tioned uponthe grader toguide the grader along the highway, so that the shoulder will beuniformly spaced from the edge of the pavement.

A further object is to provide an auxiliary blade for a road graderhaving means whereby it may be readily attached to the blade of anystandard grader, said means consisting of an anchor plate secured to oneend of the grader blade and a pair of hinged mems 0 bers, one of whichis pivotally and adjustably secured to said anchor plate, and the otherbeing secured to the auxiliary blade, said attaching means permittingthe auxiliary blade to be adjusted vertically to adapt it to the slopeof the shoulder, and also permitting lateral adjustment thereof wherebyit may be swung rearwardly to a position adjacent to the side of thegrader frame, out of the way of bridge supports or culverts locatedalong the highway.

Other objects of the invention will appear from the followingdescription and accompanying drawings and will be pointed out in theannexed claims.

accurately guide the machine along the highway so that the shoulderbeing formed by the auxiliary blade will be uniformly spaced from theedge of the concreteor paving; and the means provided for connecting theouter end of the auxiliary blade to the grader frame.

In the accompanying drawings there has been disclosed a structuredesigned to carry v I out the various objects of the invention, but itis to be understood that the invention is not confined to the exactfeatures shown as various changes may be made within the soope of theclaims which follow. r In the drawings:

Figure 1 is a perspective View illustrating a portion of a conventionaltype of road grader, and showing the invention attached to the scraperblade thereof;

Figure 2 is a diagrammatic sideelevation of a road grader showing theauxiliary blade attached to one end of, the scraper blade thereofandswung to an out-of-the-way position;

Figure 3 is an enlarged detail view showing the means for attaching theauxiliary blade to the scraper blade; and v Figure 1 is a top view ofFigure 3 par tially in section.

In the selected embodiment of the invention here shown, there isillustrated in Fig ure 1, a portion of a conventional road gradercomprising a main frame 2, supported upon suitable carrying wheels 3 and4, and having a scraper blade 5' adj ustably supported there-- on bymeans of a movable supporting frame 6, provided with the usualblade-adjusting means 7. j V g A feature of this invention resides inthe means provided whereby the grader may be used to form or finish theusual shoulders provided at the sides of a paved highway. Such meansconsists of an auxiliary blade 8 provided with a cutting edge 9 andhaving a member 11 secured to one end thereof by suitable bolts 12, asshown in Figure 1. This bracket is provided with spaced lugs 13 adaptedto interlock with similarly shaped lugs 14 provided upon a complementalbracket 15, to provide means for pivotally connecting the auxiliaryblade 8 to the scraper blade 5. The lugs 13 and 14 are apertured toreceive a pivot pin or bolt 16, which provides means for operativelyconnecting together the member 11 and bracket 15. The member 11 isprovided with suitable chipping strips 17 adapted to bear against therear curved surface of the auxiliary blade 8, and whereby the member 11may readily be fitted to the rear of said blade.

The bracket 15 is shown provided with a plurality of arcuately formedslots 18, each adapted to receive a clamping stud 19, each provided witha suitable nut and washer 21 and 22, respectively, as shown in Figures 1and 5. The studs 19 are secured to an anchor plate 26 secured to a rearend portion of the scraper blade 5 by bolts 20, as best shown in Figure1.

The bracket 15 is provided with a central aperture 24 adapted to receivea pivot pin or stud 25, secured to the anchor plate 26, as shown inFigures 1 and 5. A plurality of radially disposed cooperating teeth 27are provided upon the adjacent surfaces of the bracket 15 and anchorplate 26 adapted for interlocking engagement to facilitate in securingthe bracket 15 in adjusted position upon the anchor plate 26.

By thus securing the auxiliary blade to the scraper blade, it may beangularly adjusted in a vertical plane to adapt it to the slope of theshoulder to be formed. When the nut 28 mounted upon the pivot stud 25and the nuts 21 are loosened, the bracket 15 may be relatively rotatedupon the pivot pin 25 so as to change the angular position of theauxiliary blade 8. lVhen this blade has been adjusted to the desiredposition, the bolts 21 and 28 are tightened, whereupon the auxiliaryblade will be rigidly secured to the scraper blade so that downwardpressure may be exerted thereon to cause the auxiliary blade to gradethe bank and form the shoulder. The pivotal connection between the hingemember 11 and bracket 15 also permits the auxiliary blade 8 to be swungrearwardly to an out-of-the-way position, as shown in Figure 2, wherebythe grader may pass by bridge supports and other obstructions, such asculverts, situated along the highway.

To prevent rearward movement of the auxiliary blade 8, when in operativeoperation, a suitable connection 29 is secured to the outer end thereofby means of a chain 31 and hook element 32 terminally secured to theconnecti on 29. The opposite end of the connection 29 is suitablysecured to the forward portion of the scraper blade supporting frame 6so that the thrust against the outer end portion of the auxiliary bladewill be taken up by the connection 29, and the forward end portion ofthe scraper blade supporting frame 6. A suitable turn buckle 33 isprovided in the connection 29 for longitudinally adjusting it.

Another feature of this invention resides in the means provided forassisting the operator stationed upon the grader to guide the machinealong the highway so that the shoulder being formed by the auxiliaryblade 8 will be uniformly spaced from the edge of the pavement. Suchmeans is shown in F igure 1 and consists of a suitable guide member 34secured to a rear intermediate portion of the main scraper blade 5 bysuch means as a suitable hook bolt 35, supported in an aperture 36provided in the scraper 5. This guide member'is adapted for verticaladjustment upon the scraper blade and is located so that the operator,usually stationed at the rear end portion of the grader, may view theguide 34, as the grader travels along the highway. In grading or formingthe shoulder along the highway, as shown in Figure 1, wherein Aindicates the shoulder and B the slope of the shoulder, the grader ispreferably caused to travel along the highway with the guide 34:substantially following the edge of the pay-- ing, indicated by theletter C in Figure 1. By keeping the guide at in close proximity to theedge of the paving, the distance from the edge of the concrete to theshoulder A will be substantially uniform, as will readily be understoodby reference to Figure 1.

The auxiliary blade 8 featured in this invention may be considered as anatachment to an ordinary grader, as the attaching means provides meanswhereby the auxiliary blade may be readily and quickly attached to thescraper blade of an ordinary grader in a comparatively short time, andwithout altering or changing the construction thereof. To attach theauxiliary blade to the scraper blade, it is only necessary to drill fourholes in the scraper blade to receive the bolts 20 which secure theanchor plate 26 to the scraper blade 5. A fifth hole is preferablydrilled in the intermediate portion of the scraper blade adapted toreceive the hook bolt 35 which secures the guide member 34 to thescraper blade. The arcuately formed slots 18, provided in the hingecasting 15, provide means whereby the angular position of the auxiliaryblade may be quickly adjusted to adapt the scraper blade to theparticular angle of the slope of the shoulder, as will be understood byreference to Figure 1. When the nuts 21 and also the nut 28 of the pivotbolt 25, are tightened, the auxiliary blade will be rigidly secured tothe scraper blade, whereby downward pressure may be exerted thereagainstto force the blade into the earth and thus cause it to properly form theslope of the shoulder along the highway.

By means of this novel shoulder sloper attachment for road graders, thework of form ing the shoulders along the highway may be done by thegrader without any additional manual labor, thereby greatly reducing thecost of building the highway,

We claim as our invention:

1. The combination with a road grader comprising a scraper blade, of ananchor plate secured to one end of said blade, an auxiliary blade havinga plate secured to one end thereof, a bracket hinged to said plate andhaving a plurality of slots therein, a pivot pin secured to the anchorplate and traversing an aperture in said bracket, and a plurality ofstuds traversing said slots whereby the bracket may be secured to theanchor plate to retain the auxiliary blade in adjusted position, saidslots permitting vertical adjustment of the auxiliary blade.

15 2. The combination with a road grader comprising a scraper blade, ofan anchor plate fixedly secured to one end of said blade, an auxiliaryblade having a plate secured to one end thereof, a bracket hinged tosaid 20 plate and having a plurality of arcuately formed slots therein,a pivot pin secured to the anchor plate and traversing an aperture insaid bracket, a plurality of studs traversing said slots whereby thebracket 25 may be secured to the anchor plate to retain the auxiliaryblade in adjusted position, and toothed means on said anchor plate andsaid bracket adapted for interlocking engagement to prevent relativemovement of the 30 bracket upon said anchor plate, when said studs aretightened, said slots and toothed means permitting vertical adjustmentof the auxiliary blade.

In witness whereof we have hereunto set our hands this 22nd day ofSeptember, 1930.

- LoUIs o. ARNOLD.

VIVIAN ISAACSON

